keyword
MENU ▼
Read by QxMD icon Read
search

Shigella

keyword
https://www.readbyqxmd.com/read/28333314/characterization-of-e-type-colicinogenic-plasmids-from-shigella-sonnei
#1
Fatema Calcuttawala, Chellaram Hariharan, Gururaja P Pazhani, Dhira Rani Saha, Thandavarayan Ramamurthy
Colicinogenic plasmids encode toxic proteins which have antagonistic activity against closely related bacteria. This study describes the molecular characterization of three colicinogenic plasmids designated as pSSE3, pSSE and pSSE2, each with a molecular size of ∼6 kb, identified in clinical isolates of S. sonnei. Sequence analysis revealed that pSSE and pSSE2 shared extensive sequence homology with each other and with Escherichia coli E-type colicinogenic plasmids. The plasmid pSSE3 lacked an additional gene imparting immunity to colicin E8, a unique feature not observed in any of the previously reported sequences of colicin E3 plasmids...
March 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28326205/shigella-sonnei-bacteremia-presenting-with-profound-hepatic-dysfunction
#2
Oluwaseun Shogbesan, Andrew Rettew, Bilal Shaikh, Abdullateef Abdulkareem, Anthony Donato
Worldwide, Shigellosis is a significant public health issue, associated with nearly one million deaths annually. About half a million cases of Shigella infection are reported annually in the United States. Shigella bacteremia is uncommon and generally seen in children and immunocompromised adults. We present a case of a Shigella sonnei bacteremia with marked hepatic derangement in a 27-year-old previously healthy homosexual male with history of Roux-en-Y gastric bypass, who presented to the emergency room with a 4-day history of loose watery stool, abdominal cramps, nausea and vomiting, and yellow skin of 2-day duration...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28325837/threonine-eliminylation-by-bacterial-phosphothreonine-lyases-rapidly-causes-crosslinking-of-mapk-in-live-cells
#3
Benoit M Meijer, Suk Min Jang, Ida C Guerrera, Cerina Chhuon, Joanna Lipecka, Caroline Reisacher, Françoise Baleux, Philippe Sansonetti, Christian Muchardt, Laurence Arbibe
Old long-lived proteins contain dehydroalanine (Dha) and dehydrobutyrine (Dhb), two amino acids engendered by dehydration of serines and threonines respectively. While these residues have a suspected role in protein crosslink and aggregation, their direct implication has yet to be determined. Here, we have taken advantage of the ability of the enteropathogen Shigella to convert the phosphothreonine residue of the pT-X-pY consensus sequence of ERK and p38 into Dhb, and followed the impact of dehydration on the fate of the two MAPKs...
March 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28323855/etiology-of-acute-diarrhea-in-the-elderly-in-china-a-six-year-observational-study
#4
Zike Zhang, Shengjie Lai, Jianxing Yu, Qibin Geng, Wanqi Yang, Yu Chen, Jianguo Wu, Huaiqi Jing, Weizhong Yang, Zhongjie Li
Acute diarrhea leads to a substantial disease burden among the elderly worldwide. However, in the context of increasingly aging trend in China, the prevalence of etiological agents among elderly diarrheal patients was undetermined. This study aimed to explore the major enteropathogens of acute diarrhea among outpatients older than 65 years in China, and also the epidemiological features of the pathogens. Demographic and clinical data for acute diarrhea among outpatients older than 65 years were collected from 213 participating hospitals from 2009 to 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28321389/host-fih-mediated-asparaginyl-hydroxylation-of-translocated-legionella-pneumophila-effectors
#5
Christopher Price, Michael Merchant, Snake Jones, Ashley Best, Juanita Von Dwingelo, Matthew B Lawrenz, Nawsad Alam, Ora Schueler-Furman, Yousef A Kwaik
FIH-mediated post-translational modification through asparaginyl hydroxylation of eukaryotic proteins impacts regulation of protein-protein interaction. We have identified the FIH recognition motif in 11 Legionella pneumophila translocated effectors, YopM of Yersinia, IpaH4.5 of Shigella and an ankyrin protein of Rickettsia. Mass spectrometry analyses of the AnkB and AnkH effectors of L. pneumophila confirm their asparaginyl hydroxylation. Consistent with localization of the AnkB effector to the Legionella-containing vacuole (LCV) membrane and its modification by FIH, our data show that FIH and its two interacting proteins, Mint3 and MT1-MMP are acquired by the LCV in a Dot/Icm type IV secretion-dependent manner...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28321350/shigellosis-caused-by-ctx-m-type-esbl-producing-shigella-flexneri-in-two-siblings-of-rural-nepal-first-case-report-from-the-country
#6
Narayan Prasad Parajuli, Govardhan Joshi, Bashu Dev Pardhe, Jyotsna Shakya, Anjeela Bhetwal, Shreena Shakya, Roshan Pandit, Sumesh Shreekhanda Shrestha, Puspa Raj Khanal
Shigellosis is an acute infectious disease characterized as severe bloody diarrhea (dysentery) and is accountable for a significant burden of morbidity and mortality especially in children under the age of 5 years. Antimicrobial therapy is required in the cases of severe dysentery associated with Shigella. However, emergence of multidrug resistant (MDR) strains of Shigella spp. over the last two decades has restricted the use of common therapeutic antimicrobials. In MDR strains, the third-generation cephalosporins have been used for the treatment, but, unfortunately, emerging reports of enzyme mediated β-lactam resistance among Shigella isolates from various parts of the world have greatly compromised the therapy of pediatric dysentery...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28318301/comparative-study-on-removal-of-enteric-pathogens-from-domestic-wastewater-using-typha-latifolia-and-cyperus-rotundus-along-with-different-substrate
#7
Rita P Shingare, Sneha V Nanekar, Prashant R Thawale, R Karthik, Asha A Juwarkar
A comparative study was carried out over a period of six months to evaluate the efficiency of different substrate material along with macrophytes Typha latifolia and Cyperus rotundus in treating domestic wastewater intended for reuse in agriculture. The study was conducted over a period of six months with different retention time and observations were taken twice per month. One-way ANOVA and Tukey's HSD tests were used to determine statistical significant differences between experimental columns. Treatment with T...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28316932/bacterial-fauna-associating-with-chironomid-larvae-from-lakes-of-bengaluru-city-india-a-16s-rrna-gene-based-identification
#8
Ramprasad Kuncham, Thiyagarajan Sivaprakasam, R Puneeth Kumar, P Sreenath, Ravi Nayak, Tha Thayumanavan, Gopireddy V Subba Reddy
Chironomid larvae that inhabit in aquatic sediments play an important role as vector for bacterial pathogens. Its life cycle consists of four stages i.e. eggs, larvae, pupae and adult. In the present study we identified bacterial species associated with whole larvae of chironomids from 11 lake sediments of Bangalore region using 16s rRNA gene Sanger sequencing. We found that larvae from all lake sediments associated with bacterial species which include key pathogens. Totally we identified 65 bacterial isolates and obtained GenBank accession numbers (KX980423 - KX980487)...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28302076/uropathogenic-escherichia-coli-pathogenicity-islands-and-other-expec-virulence-genes-may-contribute-to-the-genome-variability-of-enteroinvasive-e-coli
#9
Laís Cristina da Silva, Ana Carolina de Mello Santos, Rosa Maria Silva
BACKGROUND: Enteroinvasive Escherichia coli (EIEC) may be the causative agent of part of those million cases of diarrhea illness reported worldwide every year and attributable to Shigella. That is because both enteropathogens have many common characteristics that difficult their identification either by traditional microbiological methods or by molecular tools used in the clinical laboratory settings. While Shigella has been extensively studied, EIEC remains barely characterized at the molecular level...
March 16, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28298258/susceptibility-to-rifaximin-and-other-antimicrobials-of-bacteria-isolated-in-patients-with-acute-gastrointestinal-infections-in-southeast-mexico
#10
O Novoa-Farias, A C Frati-Munari, M A Peredo, S Flores-Juárez, O Novoa-García, J Galicia-Tapia, C E Romero-Carpio
INTRODUCTION: Enteropathogenic bacteria isolated in Mexico City have shown a high rate of resistance to different antibiotics, with the exception of rifaximin (RIF). RIF is a nonabsorbable antibiotic that reaches high fecal concentrations (≈ 8,000μg/g). Susceptibility to antimicrobials can vary in different geographic regions. AIM: To study the susceptibility to rifaximin and other antimicrobials of enteropathogenic bacteria isolated in patients with acute diarrhea in the southeastern region of Mexico...
March 12, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28293234/dysbiosis-of-gut-microbiota-associated-with-clinical-parameters-in-polycystic-ovary-syndrome
#11
Rui Liu, Chenhong Zhang, Yu Shi, Feng Zhang, Linxia Li, Xuejiao Wang, Yunxia Ling, Huaqing Fu, Weiping Dong, Jian Shen, Andrew Reeves, Andrew S Greenberg, Liping Zhao, Yongde Peng, Xiaoying Ding
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder in women. Gut microbiota has been implicated to play a critical role in metabolic diseases and may modulate the secretion of mediators of the brain-gut axis. Interaction between gut microbiota and the endocrine and biochemical disturbances in PCOS still remains elusive. Here, we showed an altered gut microbiota significantly correlated with PCOS phenotype. There were 33 patients with PCOS (non-obese PCOS individuals, PN, n = 12; obese PCOS individuals, PO, n = 21) as well as 15 control subjects (non-obese control individuals, CN, n = 9; obese control individuals, CO, n = 6) enrolled in our study...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28283137/molecular-evaluation-of-high-fluoroquinolone-resistant-genes-in-endemic-cases-of-shigellosis-northeast-part-of-karnataka-india
#12
Prabhurajeshwar C, Pramod Desai, Kelmani Chandrakanth R
OBJECTIVES: Shigellosis is an acute infection of the intestine caused by bacteria in the genus Shigella and also an important cause of diarrhea in developing countries. This study was carried out to find the extent and nature of the emerging resistance in north part of Karnataka, India, and surrounding region with huge population, and also focused on the molecular mechanism of development of resistance against different generations of fluoroquinolones and explored the diversity of restriction endonucleases; we also tried to establish the significance of reduced minimal inhibitory concentrations (MIC) values...
September 2016: Annals of Global Health
https://www.readbyqxmd.com/read/28277944/the-galleria-mellonella-larvae-as-an-in-vivo-model-for-evaluation-of-shigella-virulence
#13
Shoshana Barnoy, Hanan Gancz, Yuewei Zhu, Cary L Honnold, Daniel V Zurawski, Malabi M Venkatesan
Shigella spp. causing bacterial diarrhea and dysentery are human enteroinvasive bacterial pathogens that are orally transmitted through contaminated food and water and cause bacillary dysentery. Although natural Shigella infections are restricted to humans and primates, several smaller animal models are used to analyze individual steps in pathogenesis. No animal model fully duplicates the human response and sustaining the models requires expensive animals, costly maintenance of animal facilities, veterinary services and approved animal protocols...
February 13, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28271671/overnight-enrichment-is-essential-for-reliable-salmonella-pcr-testing-from-fecal-samples
#14
Dietmar Wolff, Andreas Gerritzen
BACKGROUND: A rapid molecular test for identifying cases of infectious diarrhea might be beneficial for patients. METHODS: We established a LightMix modular multiplex PCR assay for rapid detection of Campylobacter, Salmonella, Yersinia, and Shigella species from fecal samples. RESULTS: Unlike Campylobacter sp., direct detection of Salmonella from feces by multiplex PCR was significantly less sensitive than culture. Only 11 out of 21 (52%) Salmonella culture positive specimens were positive for Salmonella in the direct multiplex PCR assay (Campylobacter: 52/53 samples [98%])...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28268178/structural-insights-into-the-architecture-of-the-shigella-flexneri-virulence-factor-icsa-virg-and-motifs-involved-in-polar-distribution-and-secretion
#15
Stefan Leupold, Petra Büsing, Philippe J Mas, Darren J Hart, Andrea Scrima
IcsA/VirG is a key virulence factor of the human pathogen Shigella flexneri, acting as both an adhesin and actin-polymerizing factor during infection. We identified a soluble expression construct of the IcsA/VirG α-domain using the ESPRIT library screening system and determined its structure to 1.9Å resolution. In addition to the previously characterized autochaperone domain, our structure reveals a new domain, which shares a common fold with the autochaperone domains of various autotransporters. We further provide insight into the previously structurally uncharacterized β-helix domain that harbors the polar targeting motif and passenger-associated transport repeat...
March 6, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28266285/molecular-diagnosis-of-non-serotypeable-shigella-spp-problems-and-prospects
#16
LETTER
Dhiviya Prabaa Muthuirulandi Sethuvel, Naveen Kumar Devanga Ragupathi, Shalini Anandan, Kamini Walia, Balaji Veeraraghavan
It is not always possible to identify Shigella serogroups/serotypes by biochemical properties alone. Specific identification requires serotyping. Occasionally, isolates that resemble Shigella spp. biochemically, but are non-agglutinable with available antisera, have been observed. Several mechanisms have been reported to limit the efficiency of the serotyping assay. Serotype conversion is a major mechanism in Shigella spp. to escape protective host immune responses. This easy conversion through significant modification of the O-antigen backbone results in different serotypes, which makes laboratory identification difficult...
February 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28256031/microbiome-dynamic-modulation-through-functional-diets-based-on-pre-and-probiotics-mannan-oligosaccharides-and-saccharomyces-cerevisiae-in-juvenile-rainbow-trout-oncorhynchus-mykiss
#17
Ana Teresa Gonçalves, Cristian Gallardo-Escárate
AIMS: This study used high-throughput sequencing to evaluate the intestinal microbiome dynamics in rainbow trout (Oncorhynchus mykiss) fed commercial diets supplemented with either pre- or probiotics (0.6% mannan-oligosaccharides and 0.5% Saccharomyces cerevisiae respectively) or the mixture of both. METHODS AND RESULTS: A total of 57 fish whole intestinal mucosa and contents bacterial communities were characterized by high-throughput sequencing and analysis of the V3-V4 region of the 16S rRNA gene, as well as the relationship between plasma biochemical health indicators and microbiome diversity...
March 3, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28252026/moderate-dietary-protein-restriction-alters-the-composition-of-gut-microbiota-and-improves-ileal-barrier-function-in-adult-pig-model
#18
Peixin Fan, Ping Liu, Peixia Song, Xiyue Chen, Xi Ma
This study was conducted to investigate impacts of dietary protein levels on gut bacterial community and gut barrier. The intestinal microbiota of finishing pigs, fed with 16%, 13% and 10% crude protein (CP) in diets, respectively, were investigated using Illumina MiSeq sequencing. The ileal bacterial richness tended to decrease when the dietary protein concentration reduced from 16% to 10%. The proportion of Clostridium_sensu_stricto_1 in ileum significantly decreased, whereas Escherichia-Shigella increased with reduction of protein concentration...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28250429/exploring-the-microbial-community-microflora-associated-with-ovine-haemonchus-contortus-macroflora-field-strains
#19
Saeed El-Ashram, Xun Suo
High-throughput sequencing technology has shown tremendous promise for microbial community composition and diversity. Illumina MiSeq platform was exploited to study the microbial community associated with the different stages of the life-cycle of ovine Haemonchus contortus field strains using two distinct amplification primer sets (targeting V3-V4, and V5-V7). Scanning electron microscope and polymerase chain reaction coupled with Illumina MiSeq platform were employed to confirm the absence of any parasite surface contamination by intact bacteria or their DNA products...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28248685/colibacillosis-in-a-new-zealand-white-rabbit-oryctolagus-cuniculus
#20
Melissa Saravia, Cristopher Segovia, Katherinne Valderrama, Javier Santander
Colibacillosis is a disease caused by Escherichia coli in a variety of animals, including humans. Rabbit colibacillosis is infrequent or with an incipient description in Chile. Here, we describe an E. coli case in a white New Zealand rabbit at an animal facility in Santiago, Chile. Necropsy, histology, bacteriology, and 16S sequencing indicated an E. coli systemic infection. Phylogenetic analysis suggested that this E. coli J305 isolate is closely related to Shigella spp.
February 28, 2017: Journal of Infection in Developing Countries
keyword
keyword
17446
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"